<select name="idTurma" id="idTurma">
  <option value="">Selecione</option>
  <?php
    foreach($this->turmas as $arrResult){
      ?>
      <option value="<?php echo $arrResult['idTurma']?>">
        <?php echo utf8_encode($arrResult['ds_turma'])?>
      </option>   
      <?php
    }
  ?>  
</select>
